// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_PUBLIC_BROWSER_WEB_UI_CONTROLLER_FACTORY_H_
#define CONTENT_PUBLIC_BROWSER_WEB_UI_CONTROLLER_FACTORY_H_

#include "content/common/content_export.h"
#include "content/public/browser/web_ui.h"

class GURL;

namespace content {

class BrowserContext;
class WebUIController;

// Interface for an object which controls which URLs are considered WebUI URLs
// and creates WebUIController instances for given URLs.
class CONTENT_EXPORT WebUIControllerFactory {
public:
    virtual ~WebUIControllerFactory() { }

    // Call to register a factory.
    static void RegisterFactory(WebUIControllerFactory* factory);

    static void UnregisterFactoryForTesting(WebUIControllerFactory* factory);

    // Returns a WebUIController instance for the given URL, or nullptr if the URL
    // doesn't correspond to a WebUI.
    virtual WebUIController* CreateWebUIControllerForURL(
        WebUI* web_ui, const GURL& url) const = 0;

    // Gets the WebUI type for the given URL. This will return kNoWebUI if the
    // corresponding call to CreateWebUIForURL would fail, or something
    // non-nullptr if CreateWebUIForURL would succeed.
    virtual WebUI::TypeID GetWebUIType(BrowserContext* browser_context,
        const GURL& url) const = 0;

    // Shorthand for the above, but returns a simple yes/no.
    // See also ContentClient::HasWebUIScheme, which only checks the scheme
    // (faster) and can be used to determine security policy.
    virtual bool UseWebUIForURL(BrowserContext* browser_context,
        const GURL& url) const = 0;

    // Returns true for the subset of WebUIs that actually need WebUI bindings.
    virtual bool UseWebUIBindingsForURL(BrowserContext* browser_context,
        const GURL& url) const = 0;
};

} // namespace content

#endif // CONTENT_PUBLIC_BROWSER_WEB_UI_CONTROLLER_FACTORY_H_
